<template>
    <div>
        <div class="search">
            <input v-model="keyword" class="search-input" type="text" placeholder="输入城市名或拼音" /> 
        </div>
        <div class="search-content" ref="search" v-show="keyword">
            <ul>
                <li class="search-item border-bottom" v-for="item of list" :key="item.id" @click="handleCityClick(item.name)">
                    {{item.name}}
                </li>
                <li class="search-item border-bottom" v-show="hasNoData">没有找到匹配数据</li>
            </ul>
        </div>
    </div>
</template>

<script>
import { clearTimeout, setTimeout } from 'timers';
import { mapMutations } from 'vuex'
import Bscroll from 'better-scroll'
export default {
    name: 'CitySearch',
    props: {
        cities: Object
    },
    data () {
        return {
            keyword: '',
            list: [],
            timer: null
        }
    },
    methods: {
         handleCityClick (city) {
            // this.$store.dispatch('changeCity', city)
            this.changeCity(city)
            this.$router.push('/')
        },
        ...mapMutations(['changeCity'])
    },
    computed: {
        hasNoData () {
            return !this.list.length
        }
    },
    watch: {
        keyword () {
            if (this.timer) {
                clearTimeout(this.timer)
            }
            if (!this.keyword) {
                this.list = []
                return
            }
            this.timer = setTimeout(() => {
                const result = []
                for (let i in this.cities) {
                    this.cities[i].forEach((value) => {
                        if (value.spell.indexOf(this.keyword) > -1 || value.name.indexOf(this.keyword) > -1) {
                            result.push(value)
                        }
                    })
                }
                this.list = result
            }, 100)
        }
    },
    mounted () {
        this.scroll = new Bscroll(this.$refs.search);
    }
}
</script>

<style lang="scss" scoped>
    @import '../../../assets/styles/varibles.scss';
    .search {
        height: .72rem;
        padding: 0 .1rem;
        background: $bgColor;

        .search-input {
            box-sizing: border-box;
            width: 100%;
            height: .62rem;
            line-height: .62rem;
            padding: 0 .1rem;
            text-align: center;
            border-radius: .06rem;
            color: #666;
        }
    }

    .search-content {
        z-index: 1;
        overflow: hidden;
        position: absolute;
        top: 1.58rem;
        left: 0;
        right: 0;
        bottom: 0;
        background: #eee;

        .search-item {
            line-height: .62rem;
            padding-left: .2rem;
            background: #fff;
            color: #666;
        }
    }
</style>
